class_docstr: Inverse Laplace transform methods are implemented using this
  class, in order to simplify the code and provide a common
  infrastructure.
  
  Implement a custom inverse Laplace transform algorithm by
  subclassing :class:`InverseLaplaceTransform` and implementing the
  appropriate methods. The subclass can then be used by
  :func:`~mpmath.invertlaplace` by passing it as the *method*
  argument.
docstr: Determine the vector of Laplace parameter values needed for an
  algorithm, this will depend on the choice of algorithm (de
  Hoog is default), the algorithm-specific parameters passed (or
  default ones), and desired time.
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code: def calc_laplace_parameter(self, t, **kwargs):
      r"""
      Determine the vector of Laplace parameter values needed for an
      algorithm, this will depend on the choice of algorithm (de
      Hoog is default), the algorithm-specific parameters passed (or
      default ones), and desired time.
      """
      raise NotImplementedError
  
label_desc: Use image node_id 2 for calling the InverseLaplaceTransform obj's underlying member method code with example usage: obj.calc_laplace_parameter(t) without return types